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  <title>counter_lu_policy Interface</title>
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    <h1><tt>counter_lu_policy</tt> Interface</h1>

    <p>A list-update policy that moves elements to the front of the
    list based on the counter algorithm.</p>

    <p>Defined in: <a href=
    "../../../../include/ext/pb_ds/list_update_policy.hpp"><tt>list_update_policy.hpp</tt></a></p>

    <h2><a name="link1" id="link1">Template Parameters</a></h2>

    <table class="c1" width="100%" border="1" summary=
    "Template Parameters">
      <tr>
        <td width="20%" align="left"><b>Parameter</b></td>

        <td width="50%" align="left"><b>Description</b></td>

        <td width="30%" align="left"><b>Default Value</b></td>
      </tr>

      <tr>
        <td>
          <pre>
<a name="Max_Count39887466" id=
"Max_Count39887466">size_t Max_Count </a>
</pre>
        </td>

        <td>
          <p>Maximum count.</p>

          <p>When some element is accessed this number of times, it
          will be moved to the front of the list.</p>
        </td>

        <td>5</td>
      </tr>

      <tr>
        <td>
          <pre>
<a name="Allocator35940069" id=
"Allocator35940069"><b>class</b> Allocator </a>
</pre>
        </td>

        <td>
          <p>Allocator type.</p>

          <p>This is used only for definitions, e.g., the size
          type.</p>
        </td>

        <td>
          <pre>
std::allocator&lt;<b>char</b>&gt;
</pre>
        </td>
      </tr>
    </table>

    <h2><a name="link2" id="link2">Public Types and
    Constants</a></h2>

    <h3><a name="link3" id="link3">Policy Definitions</a></h3>

    <table class="c1" width="100%" border="1" summary="Types">
      <tr>
        <td width="30%" align="left"><b>Type</b></td>

        <td width="55%" align="left"><b>Definition</b></td>

        <td width="15%" align="left"><b>Description</b></td>
      </tr>

      <tr>
        <td>
          <pre>
<a name="allocator48440069" id="allocator48440069">allocator</a>
</pre>
        </td>

        <td>
          <pre>
<a href="#Allocator35940069"><tt>Allocator</tt></a>
</pre>
        </td>

        <td>
          <p><a href="#Allocator35940069"><tt>Allocator</tt></a>
          type.</p>
        </td>
      </tr>

      <tr>
        <td>
          <pre>
<a name="max_count52407466" id="max_count52407466">max_count</a>
</pre>
        </td>

        <td>
          <pre>
<a href="#Max_Count39887466"><tt>Max_Count</tt></a>
}
</pre>
        </td>

        <td>
          <p>Maximum count.</p>
        </td>
      </tr>
    </table>

    <h3><a name="link4" id="link4">General Definitions</a></h3>

    <table class="c1" width="100%" border="1" summary="Types">
      <tr>
        <td width="30%" align="left"><b>Type</b></td>

        <td width="55%" align="left"><b>Definition</b></td>

        <td width="15%" align="left"><b>Description</b></td>
      </tr>

      <tr>
        <td>
          <pre>
<a name="size_type55424436" id="size_type55424436">size_type</a>
</pre>
        </td>

        <td>
          <pre>
<b>typename</b> <a href=
"#allocator48440069"><tt>allocator</tt></a>::size_type
</pre>
        </td>

        <td>
          <p>Size type.</p>
        </td>
      </tr>
    </table>

    <h3><a name="link5" id="link5">Metadata-Type
    Definitions</a></h3>

    <table class="c1" width="100%" border="1" summary="Types">
      <tr>
        <td width="30%" align="left"><b>Type</b></td>

        <td width="55%" align="left"><b>Definition</b></td>

        <td width="15%" align="left"><b>Description</b></td>
      </tr>

      <tr>
        <td>
          <pre>
<a name="metadata_type2849297114" id=
"metadata_type2849297114">metadata_type</a>
</pre>
        </td>

        <td>
          <pre>
Some class containing a counter.
</pre>
        </td>

        <td>
          <p>Metadata on which this functor operates.</p>
        </td>
      </tr>

      <tr>
        <td>
          <pre>
<a name="metadata_reference583863863" id=
"metadata_reference583863863">metadata_reference</a>
</pre>
        </td>

        <td>
          <pre>
<b>typename</b> <a href=
"#Allocator35940069"><tt>Allocator</tt></a>::<b>template</b> rebind&lt;
    <a href=
"#metadata_type2849297114"><tt>metadata_type</tt></a>&gt;::other::reference
</pre>
        </td>

        <td>
          <p>Reference to metadata on which this functor
          operates.</p>
        </td>
      </tr>
    </table>

    <h2><a name="link6" id="link6">Public Methods</a></h2>

    <h3><a name="link7" id="link7">Metadata Methods</a></h3>

    <table class="c1" width="100%" border="1" summary="Methods">
      <tr>
        <td width="45%" align="left"><b>Method</b></td>

        <td width="55%" align="left"><b>Description</b></td>
      </tr>

      <tr>
        <td>
          <pre>
<a href="#metadata_type2849297114"><tt>metadata_type</tt></a>
  <b>operator</b>()
  () <b>const</b>
</pre>
        </td>

        <td>
          <p>Creates a metadata object.</p>
        </td>
      </tr>

      <tr>
        <td>
          <pre>
<b>bool</b> 
  <b>operator</b>()
  (<a href=
"#metadata_reference583863863"><tt>metadata_reference</tt></a> r_metadata) <b>const</b>
</pre>
        </td>

        <td>
          <p>Decides whether a metadata object should be moved to
          the front of the list.</p>
        </td>
      </tr>
    </table>
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